body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #1e1e1e;
    color: #fff;
}
header {
    background-color: #000;
    padding: 20px;
    text-align: center;
}
nav a {
    margin: 0 15px;
    color: red;
    text-decoration: none;
    font-weight: bold;
}
.logo {
    max-height: 100px;
}
main {
    padding: 20px;
}
footer {
    background-color: #111;
    text-align: center;
    padding: 10px;
    position: fixed;
    width: 100%;
    bottom: 0;
}
input, textarea {
    display: block;
    margin: 10px 0;
    width: 100%;
    max-width: 500px;
}